当你有更复杂的结构时，你可能需要在打印之前转换成JSON:

// Convert structs to JSON.
data, err := json.Marshal(myComplexStruct)
fmt.Printf("%s\n", data)

来源:https://gist.github.com/tetsuok/4942960

我喜欢垃圾。

从他们的自述:

type Person struct {
  Name   string
  Age    int
  Parent *Person
}

litter.Dump(Person{
  Name:   "Bob",
  Age:    20,
  Parent: &Person{
    Name: "Jane",
    Age:  50,
  },
})

在测试中，Sdump非常方便:

func TestSearch(t *testing.T) {
  result := DoSearch()

  actual := litterOpts.Sdump(result)
  expected, err := ioutil.ReadFile("testdata.txt")
  if err != nil {
    // First run, write test data since it doesn't exist
        if !os.IsNotExist(err) {
      t.Error(err)
    }
    ioutil.Write("testdata.txt", actual, 0644)
    actual = expected
  }
  if expected != actual {
    t.Errorf("Expected %s, got %s", expected, actual)
  }
}

一个简单的问题有很多答案。我还不如参加竞选呢。

package main

import "fmt"

type Project struct {
    Id    int64  `json:"project_id"`
    Title string `json:"title"`
    Name  string `json:"name"`
    //Data    Data    `json:"data"`
    //Commits Commits `json:"commits"`
}

var (
    Testy Project
)

func dump_project(foo Project) {
    fmt.Println("== Dump Project Struct ====")
    fmt.Printf("Id: %d\n", foo.Id)
    fmt.Println("Title: ", foo.Title)
    fmt.Printf("Name: %v\n", foo.Name)
}

func main() {
    fmt.Println("hello from go")
    Testy.Id = 3
    Testy.Title = "yo"
    Testy.Name = "my name"
    fmt.Println(Testy)
    dump_project(Testy)
}

输出的各种打印方法

hello from go
{3 yo my name}
== Dump Project Struct ====
Id: 3
Title:  yo
Name: my name

我认为应该使用json。MarshalIndent——令人惊讶的是没有建议这样做，因为它是最直接的。例如:

func prettyPrint(i interface{}) string {
    s, _ := json.MarshalIndent(i, "", "\t")
    return string(s)
}

没有外部deps，结果输出格式很好。

我建议你使用fmt。Printf("%#v\n"， s)，它将打印golang类型在同一时间

package main

import (
    "fmt"
    "testing"
)

type student struct {
    id   int32
    name string
}

type Project struct {
    Id      int64   `json:"project_id"`
    Title   string  `json:"title"`
    Name    string  `json:"name"`
}

func TestPrint(t *testing.T) {
    s := Project{1, "title","jack"}
    fmt.Printf("%+v\n", s)
    fmt.Printf("%#v\n", s)
}

结果:

{Id:1 Title:title Name:jack}
main.Project{Id:1, Title:"title", Name:"jack"}

有时，将结构体打印为有效的Go代码(相当于Go /ast代码)可能会很方便。出于这个目的，https://github.com/hexops/valast做得很好:

package main

import (
    "fmt"

    "github.com/hexops/valast"
)

type ProjectData struct {
    Title   string `json:"title"`
    Name    string `json:"name"`
    Data    string `json:"data"`
    Commits string `json:"commits"`
}

type Project struct {
    Id   int64        `json:"project_id"`
    Data *ProjectData `json:"data"`
}

func main() {
    p := Project{
        Id: 1,
        Data: &ProjectData{
            Title:   "Test",
            Name:    "Mihai",
            Data:    "Some data",
            Commits: "Test Message",
        },
    }
    fmt.Println(valast.String(p))
}

输出:

go run main.go 
Project{Id: 1, Data: &ProjectData{
        Title:   "Test",
        Name:    "Mihai",
        Data:    "Some data",
        Commits: "Test Message",
}}